2 NICs horror story

[LETSGOCHAMP]

Hello and thanks for reading!

 

PC

NIC 1 (onboard) = 2.5 GB (directlink unraid)

NIC 2 USB = 1 GB (tried 2, one realteck, one linksys) - internet

 

 

NAS (unraid)

NIC 1 (onboard) = 1gb - internet

NIC 2 = 2.5 gb- direct link PC

 

LAN internet is /24 192.168.1.x (multiple devices, some static, some not)

direct link is /24 10.0.0.x

 

The issue stands like this. If on the PC, windows 11, i disable the "internet" nic, the USB one, the transfer is as expected 220-240 mb, but if the USB internet NIC is on, it caps between 20-40 mb.

I`m 100% the "internet" NIC is at fault, because i was transfering to the Unraid to 30-40 mb, and once i disabled the USB NIC it skyrocketed to 230-240 mb

Does anyone on this planet know how and why activating the secondary NIC throotles down the direct link NIC ?

[manikyath]

how are you testing this speed? it's not because you *have* a direct 2.5G link, that it'll absolutely use the direct 2.5G link.

[LIGISTX]

Are you connecting to your unraid share over the 10.0.0.0 subnet? Assuming yes, it should work normally without having to disable anything. 

[Alex Atkin UK]

As mentioned above, if you have two paths to the same box over different IP addresses, you have to specify the IP address of the server not its name.  Using the name will use the NIC connected to the Internet as this will be considered the default gateway.  Although 20-40MB/s is on the low side even for Gigabit.

[Jarsky]

The issue is that while you have a multiple nics, it sounds like you have a single network (e.g 192.168.1.0/24). 

 

My question is:

If both machines are on the same network, and both are connected to internet (the switch); then why have a dedicated Internet NIC, and a dedicated UnRAID connection? Is it because you don't have a switch with 2.5gbE ports? 

 

I guess you could try checking that the Internet NIC is set as the highest metric.

And create a static route for the IP address of your UnRAID server. When configuring the static route make sure the Interface is the IP address of your 2.5gbE connection.  https://webhostinggeeks.com/howto/how-to-add-persistent-static-routes-in-windows/ and set a high metric on it.

 

 

[Alex Atkin UK]

1 hour ago, Jarsky said:

The issue is that while you have a multiple nics, it sounds like you have a single network (e.g 192.168.1.0/24).

Quote

direct link is /24 10.0.0.x

They clearly do have a second network directly between the two.  If all they are wanting is shares to use this network, none of what you suggest is necessary.